Improvement in spark-arresters



waited tetra aient @twine f Letters Patent No. 99,378, dated February 1, 1870.

vIMllROVBIlllENfl.' IN S-PARK-ARRESTERS.

The Schedule referred to in these Letters Patent and making part of the same.

To all 'whom it may concern Be it known that I, EDWARD WAUD, of Eugene City, in the county ofLane, and State of Oregon, have invented a new and improved Spark-Arrester; and I do hereby declare that the following is a full, clear, and exact description thereof, which will enable others skilled in the art to make and use the same, reference being had to the accompanying drawings, forming part of this specication, in which-'- Figure l represents a vertical central section of my improved spark-arrester.

Figure 2 is a horizontal section of the same, the plane of section being indicated by the line'x x, iig. 1.

Similar letters of reference indicate corresponding parts.

This invention relates to a new attachment to the smoke-stacks of locomotive-engines, steamboats, Sto., and has for its object to'prevent the escape of sparks from the smoke-stack.'` c

The invention consists in the combination of parts whereby theashes collected in a tubular receptacle at one side of the stack, are caused to be delivered by the ascending gases' operating a wheel, as hereinafter set forth.

A, in the-drawing, represents the lower part of a smoke-stack, of suitable construction.

B is the upper part of the smoke-stack.

I n it is suspended the perforated inverted cone O, which prevents ^the sparks from escaping through the upper end of tie smoke-stack.

Under the cone G is arranged, in the smoke-stack,

Ian inclined annular plate, D, which has a projecting flange, a, around its inner edge, and which lits, with its outer edge, against the side of B, as shown,

The lower end of the plate D is in communication with a tube, E, which conducts all sparks, ashes,.and cinders, which fall down upon the plate D, into alower horizontal tube, F. This tube F guides all ashes, 86e., that fall int-o it, to the side ofthe engine or boat,ai1d is, in order to facilitate the discharge of such matter, provided with a rotary worm, G, which forces all contents toward the discharge-end.

The worm or screw G is revolved by means of a belt, 1), which reaches around lthe'pulleys c dof the shafts G H.

The latter shaft is fitted through the lower part of the'smoke-stack, and has a bucket-wheelhl, mounted upon it. Thegases arising in tlie smoke-stack strike the buckets of the wheel I, and thereby revolve the same. The worm is thus rotated by the force of the lascending gases, and the. cinders and ashes are gradually carried out.l

The worm G,'instead'of being driven by the bucket- Wheel I, may be driven by a belt, directly from the donkey engine.

In stationary steam-engines, saw-mills, Sac., the pipe or tube E F, may be 'continued down vertically, and

vmay discharge the cinders, ashes, dto., into a well or other receptacle.

Havingthus described my invention, I

I claim as new,vand desire to secure by Letters Patent-'- The combination of lwheel I, revolved by the as cending gases, with the worm G, arranged substantially as shown and described, and for the purpose specified. Y EDWARD WAUD.

Vitnesses:

S. ELLswoR'rH, T; S. TREVETT. 

